﻿/*******************************************************************************************
 * Copyright (c) 2009 Alex Robson, Rob Simmons, Craig Israel, and Rachel Twyford
 *
 * Use of this software in any form requires that you have both 
 * read and agreed to the following terms:
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the "Software"), 
 * to deal in the Software without restriction, including without limitation 
 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions: 
 *
 * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, 
 * this list of conditions and the following disclaimer in the 
 * documentation and/or other materials provided with the distribution.
 * Neither the name of Nvigorate nor the names of its contributors may 
 * be used to endorse or promote products derived from this software without 
 * specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 * DISCLAIMED. IN NO EVENT SHALL ANY CONTRIBUTOR BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ****************************************************************************************/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using Microsoft.FxCop.Sdk;
using Nvigorate.Common;
using Nvigorate.Extensions;
using Nvigorate.Xml;

namespace Nvigorate.Generation
{
    public class ClassData
    {
        public string AssemblyName { get; set; }
        public string ClassName { get; set; }
        public string FullName { get; set; }
        public string Namespace { get; set; }
        public string QualifiedName
        {
            get { return string.Format("{0}, {1}", FullName, AssemblyName); }
        }
        public IEnumerable<Tuple<string, string>> Properties { get; set; }

        public ClassData(TypeNode type)
        {
            AssemblyName = type.DeclaringModule.ContainingAssembly.Name;
            ClassName = type.Name.Name;
            FullName = type.FullName;
            Namespace = type.DeclaringModule.Name;
            Properties = type
                .Members
                .Where(m => m.IsPublic && !m.IsSpecialName)
                .Select(m => Tuple.Create(type.GetProperty(m.Name).Type.Name.Name, m.Name.Name));
        }
    }

    public class Introspector
    {
        public static ClassData GetClassMetadata(string assemblyPath, string targetNamespace, string className)
        {
            var assembly = AssemblyNode.GetAssembly(assemblyPath);
            var targetClass = assembly
                .GetType(Identifier.For(targetNamespace), Identifier.For(className));

            return new ClassData(targetClass);
        }
        
        public static IEnumerable<ClassData> GetClassMetadataForNamespace(string assemblyPath, string targetNamespace)
        {
            var assembly = AssemblyNode.GetAssembly(assemblyPath);
            var types = assembly.Types.Where(t => t.IsPublic && t.Namespace.Name == targetNamespace);

            return types.Select(t => new ClassData(t));
        }

        public static IEnumerable<ClassData> GetClassesFromConfiguration(string configPath)
        {
            var configuration = XDocument.Load(configPath);
            
            var assemblyPath = configuration.Element("assembly").GetAttributeValue("path");

            var elements = configuration
                .Elements("namespace");

            return elements.Select(n =>
                {
                    var targetNamespace = n.GetAttributeValue("name");
                    if(n.Elements().Count() > 0)
                    {
                        return elements.Select(c =>
                                GetClassMetadata(assemblyPath, targetNamespace, c.GetAttributeValue("name")));
                    }
                    else
                    {
                        return GetClassMetadataForNamespace(assemblyPath, targetNamespace);
                    }
                }).Flatten();
        }
    }
}
